Here's an interesting read on wood hardness: http://www.woodgears.ca/hardness_test/ http://www.woodgears.ca/hardness_test/ It's pretty amazing how much variabi

Here's an interesting read on wood hardness: http://www.woodgears.ca/hardness_test/ http://www.woodgears.ca/hardness_test/ It's pretty amazing how much variability there is between samples of the same species.